the final high current connections

the final high current connections
final high curent buss bar prep

My pure copper buss bars do not have the benefit of being nickle plated to prevent corrosion and oxidation, so after some research, it seems the next best thing is to buff the connections to shiny copper with steel wool, and then coat the connections with a petroleum grease like Vaseline or dielectric grease.
This material remains stable for years, and acts as a moisture barrier to keep the bare copper clean and shiny. This part of the load center is like a puzzle, and needs to be assembled in a specific order. Now I am ready to finish up the AC wiring, which is going to also need to be done in a specific order.